Info:Martin 100C13 Type C Single Strand Welded Reboreable Roller Chain Sprocket, 1 to 2-3/8 in Dia Bore, 5.821 in OD, #100 Chain, 13 Teeth, 1-1/4 in Pitch, Steel
Info:Martin 100C14 Type C Single Strand Welded Reboreable Roller Chain Sprocket, 1 to 2-3/4 in Dia Bore, 6.226 in OD, #100 Chain, 14 Teeth, 1-1/4 in Pitch, Steel